Coal-mining machine.



gether provide heads \casing.

' UNITED STAT s QFFIQE? rnont's J. xaweona, QPJAM-ISOXVILLE, rizxrsrtvama, iissrcizon or ONE-HALF '10 join? U.- 1 1IRST, O1-REYNOLDSYILLE, PENNSYLVANIA.i 1

IcoAL-MmI- GM'AcHmEL No. 874,028. i

T all whom it may concern:

Be it known that I, Tnon'ss J. NEwcoME, a citizenof the 'Unitedf States of America, residingat Jamisonville, in, the county of Butler and" State of Pennsylvania, have invented certain new and useful Tmprove- The invention consists of a casing contain,

ing an electric .niotor and provided with suitable shaf t bearings, sa d casing being mounted upon wheels to adapt the machine to be easily moved, upon a track. to advance or re tract it with relation to thesurface to be drilled: Q v

The invention also consists of certain novel details of constr'uction all of whichnvill be fully described hereinafter in connection with the accompanying drawing, which forms a be readily thrown back upon its hinged sup part of this specification and defined in the appended claims. i In the drawing, 4 'vertical section of amining machine embodying the invention, Fig. 2 is a transverse vvertical section on the line of Fig. 1, Fig. 3 1s a view 1n perspectlve partly in vertical transverse sectlon of the machine casing, and Fig. 4 is an end elevation of the drill-bit.

The reference numeral 1 designates a rectangular metallic casing preferably cast in two sections 2 and 3 each having integral closure plates 4, which when brought' toto close the ends of the Each of the closure plates 4 is gormed with a half bearing 5 on its inner side nd when said half bearings are brought to-' ether they provide bearings for a motor shaft 6. f

To the rear endof the casing 1 is securely bolted a rectangular plate 7 from which project handles 8 to facilitate moving the machine. A transverse shaft 9 extends through the casing being supported in bearings 10 formed in the sides 0 the casing and upon the ends of said shaft are mounted wheels 11 adapted to travel on a suita blesupport 12. To the front end of the-casing is secured a rectangular platek3"by suitab bolts, and from said plate projects a brack t 14'hav1ng a tubular extension 15 registeringwith the Specification of Letters Patent. 1

Figure 1 is a longitudinal Patented Dec. 17, 1907.

Application filedn c mba is. 1906. swarm. 348.050.

bearing in the front closure plate and a bearmg formed in the plate 13, and'serving as a bearing for the front end of the shaft 6, and

having a drill-bit 17 removably attached to its forward end. Within the casing 1 is suit ably supported a motor of any well-known constructlon provided with the usual commutator 18, armature 19 and field magnets" 20. The contact brushes 21 bearingupon the commutator are supported upon arms 22 connected by conductors .23 and 24 to the opposite poles of a source of current supply.

Upon the top of the casing-1s a hood 25 hinged at one side'between lugs 26 projecting from the top ofthe-casing, and adaptedto be detachably secured at its'opposite side by a staple 27v or other suitable securing device. \Vithin this hood is supported any sented at 28, an opening 29 being formed in the top of the casing for the passage of I referred torm of rheostat as conventional y repre- I the required connections between the rheostat and motor windings. V g I It will be apparent'that the hood 25 may port to permit access to the rheostati The drill-bit 17, and the machine may be readily moved upon its wheel supports by means of the handles 8. The bit may be-readily disconnected and removed for sharpening or repairs, and the construction bl the machine casing permit-s of its being opened for the renewal of the mechanism contained therein. As will be seen all of the operating arts of. the machine with the exception of t e drill,' are inclosed and therefore free from liability of flying particles of coal, dust, etc. Furthermore, the shaft 6 is not only held against longitudinal movement, but the extended bearing prevents liability of the shaft being sprung or buckled under the pressure place thereon during the drilling operation. The particular structure shown provides a compact motor-carrier, rigid and durable in tending ,longitudinally of th faces ofthe nds and What I claim and desire 'tosecure by Letters Patent, is 4 1. motor-carrying casing formed sections, a reinforcing plate secured on each end of the casing, an, extended bearing secured tothe 'front relnforcmg plate, a motor. shaft mount,

ed in the endsof said sections, said shaft ex e casing and through said-extended bearing,-said shaft being held from longitudinal movement, a'

motor for imparting rotary movement to the 4 shaft, a pair of'wheels on said cent the front end thereof, and'a drill mounted on the end of-the motor shaft.

2. Inia coal mining-machine, comprising casing adj a- In a coal mining machine, a closed 1, longitudinal movement, a motor amotor-carrying casing formed. in sections,

each section comprising an intermediate portion U-shaped in 'crossfsection, and ends formedintegral therewith, said sections opposing each' other-to form'a closed'casing, the ends projectinghutwardly beyond. the plane of the intermediateportlon to rovide securing flanges, areinforcingplate or each end, said plates abutting against the outer secured to the projectends, an extended bearing mg portions of the secured to the. front reinforcing platea mot'or shaft mounted inith'e ends of said sec-' tions, said shaft extending longitudinally of the casing and-through said extended bearing, said'shaft'being held from longitudinal ;movement, a motor for imparting rotary movement to the shaft, a palr of Wheels'on said casing adjacent the front-end thereof,

shaft. 3. In a coal mining machine, 'a closed' motor-carrying casing formed in sections, a reinforcing platesecured on each end of the casing,

and a drill mounted on the end of the motor {in an extended bearing. secured to the front reinforcing plate, strengthening F the motor shaft.

of forcingjplate, a

r b extending.- longitudinally,

of the bearing, a motor shaftmounted in the ends of said sections, said shaft extendin long tudinallypf the casing and through said extended bear1ng,'said shaft bein held from ing rotary movement to the shaft, a pair-of Wheels on said casing adj acent'the front end thereof, and a drill mounted on the end of 4. In a eoalmining a 'motor-carrying'casing formed in sections, each section comprising an intermediate portion Ushapedin cross section, and formed integral'therewith, said section's op-' posing each" other to form a cloised casing,. the ends projecting outwardly beyond the plane'of'theintermediate port on to provide securing flanges, an opening formed in the said bearing haying or imparte madhine, comprising ends' 1 top of the casing, a hinged'coyer for said'casr .WhGBlS on said casing adjacentfthe' front end drill mounted on the 'endof.

thereof, and a the niotorlshaft; v .In' testimony whereof I affix my signature the presence of two witnesses.

THOMAS J. 'NE Wco iE;

v Witnesses? GEoRcE T. MILLER, JOHN H. WILsoN. 

